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Colloid and Polymer Science

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04.11.2022 | Original Contribution

Improved photovoltaic performance of PTB7:PC₇₁BM blend by thermal annealing and solvent vapor annealing

verfasst von: Xiaoye Zhang, Jintao Wang, Zhanfeng Li, Shanshan Guo, Yahui Tong, Baoyou Liu, Gang Yue, Yuying Hao

Erschienen in: Colloid and Polymer Science | Ausgabe 1/2023

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Abstract

The ordered aggregation of polymer donor and acceptor greatly affects the charge transport and charge recombination in polymer solar cells (PSCs). The post-production treatment of the active layer is the most widely applied strategy to improve the micro-distribution of polymer. Here, we demonstrated a simple method for high performance solar cell with thermal annealing (TA) and solvent vapor annealing (SVA). For the PSCs based on PTB7:PC₇₁BM, the champion power conversion efficiencies (PCEs) were improved from 7.96 to 8.68% by employing TA + SVA and further to 8.86% with SVA + TA treatment. The enhanced PCEs of PSCs undergoing SVA + TA process are mainly attributed to the formation of a network phase separation structure with donor and acceptor phases penetrating each other and the improvement of the crystallinity of PTB7, while the improved photovoltaic performance with TA + SVA treatment is owing to the improved carrier mobility of blend films. Our work provides a useful strategy toward highly efficient PSCs without time-consuming and laborious fabrication procedures.

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Vorheriger Artikel Facile preparation of TiO2/SiO2/modified polystyrene resin composite superhydrophobic coatings for self-cleaning and oil/water separation

Nächster Artikel Facile preparation of stretchable and multifunctional ionic gels via frontal polymerization of polymerizable ternary deep eutectic monomers with a long pot life

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Titel: Improved photovoltaic performance of PTB7:PC71BM blend by thermal annealing and solvent vapor annealing
verfasst von: Xiaoye Zhang
Jintao Wang
Zhanfeng Li
Shanshan Guo
Yahui Tong
Baoyou Liu
Gang Yue
Yuying Hao
Publikationsdatum: 04.11.2022
Verlag: Springer Berlin Heidelberg
Erschienen in: Colloid and Polymer Science / Ausgabe 1/2023
Print ISSN: 0303-402X
Elektronische ISSN: 1435-1536
DOI: https://doi.org/10.1007/s00396-022-05034-5

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